Lubricator for fluid-actuated apparatus



Aprl 27 1926. 1,582,368

J. W. ARNOLD` LUBRICATOR FOR FLUID ACTUATED AP?ARATUS Filed Oct. 12 1925 Patented Apr. 27, 192,6.

* UNITED STATES l l g 1,582,368 PATENT OFFICE.

' JI-IN W. ARNOLD, 0F SAN FRANCISCO, CALIFORNIA.

LUBRICATOR FOR FLUID-ACTUATED APPARATUS.

Application led October 12, 1925.A Serial 110.652,168.y

To all whom 'it may concer/n.'

Be it known that I, JOHN W. ARNOLD,

a citizen of the United States, and a residentl of San Francisco, in` the county of San Francisco and State of California, have invented a new and useful Improvement in Lubricat-ors for Fluid-Actuated Apparatus, of which the following is a specification.

This invention relates to lubricators for fluid actuated devices, such as hammers, drills and the like. Y

The general object of the invention is the provision of a simple and ecient lubricator adapted to supply lubricant not possible to be entrained by compressed fluid entering t-he fluid actuated device, and further adapted to permit of replenishing the supply of lubricant during the operation of the' fluid actuated device.

The above and other objects are acconr plished by instrumentalities pointed out nV the following specification. Y

The invention is clearly defined in the claims.

A satisfactory embodiment of the invention is illustrated in the accompanying draw-A ings forming part of the specification and in which- Y Figure 1 is a side elevation of the device -in use.

Figure 2 isV a detail vertical longitudinal section of the device. fy Figure 3 is a cent-ral cross section looking at right angles to Figure 2, and

`Figure 4: is a detail perspective of the blow-back valve; f

In the drawings 5 indicates-the hammer, 6 the handle, 7 the lever for actuating the control'valve, 8 the flexible connection for supplying compressed fluid to the hammer and the flow of which is controlledl by the valve operable by the lever 7. These parts are all of well known construction. The lubricator forming the subject matter of the present invention is designated generally by a and is hereinshown as forming the means` for connecting the flexible connection tothe handle 6. In the embodiment shown the lubricator comprises a hollowrcasing 9 of cylindrical contour having at one end 'a .female fitting 1()` which is screwed upon Athe end of handle 6, and its opposite end is provided with a male littingk 11 which is connected by a union 12 to 4the flexible connection 8. An open-ended tubular container 13 screwed into an open-ended transverse passage 11iin casing 9 is adapted for holding the lubricant, such as oil to be supplied to the fluid actuated device, such as the hammer 5. A chamber liis formed within thefcontaincr 13 by means of plates 16 and 17 screwed into one'end of the container and spaced-apart therein, as shown. The chamber 15 in turn communicates with the longi.

tu'dinal passage 18 of the casing through a. plurality of ports 19 formed in the walls of the chamber, as shown. The inlet end of the container which is the end thereof remote from the chamber 15 has a valve seat 2() screwed therein, and-the passage 21 of the seat. 20 constitutes the fluid inlet or filling passage for' the containerl 13. The passage 21 has an .inwardly flared or'tapered portion which accommodates a correspondingly shaped portion of an inlet controlvalve 22, and a shank 23` extending inwardly from the base of the inlet valve 22 terminates in a needle point 24 adapted to enter a needle valve 25 in the inner disk 16 and thereby control the outlet from the container 13 or communication vbetween the said container and the chamber 15. A helical compression spring 25is disposed within the container and surrounds the shank 23 and constantly urgesthe inlet valve 22 to close the inlet passage 21. The inlet valve 22I 'and the length of the shank 23 are such that when the inlet valve closes the inlet passage,.-thek needle point 2l will open the passage between the container` and the chamber 15. When the inlet valve is operated to open the inlet open'- ing 21V and moves inwardly and away from the tapered surface, the needle point 2l closes they passage between the container and the 'chamber'. 'I he inlet valve 22 is provided with an extension 26 4extending outwardly from the flared portion thereof, and yextending inwardly from the extension 26 is a passage 27, the inner end of which communicates with an axial duct 2S that in turn communicates with one or more laterally extending ducts 29 opening through the side of the inlet valve 22. It will be noted thatby reference to Figure 2 that when the inlet valve is in open position, communication between the interior of the container and the f vexterior is'efi'ected through theducts 29, 28

'30 which is retained against youtward dislacement from the assa e 27 b van annu- P P y titl lar valveseat lscreivedinto the outer end. of the passa-ge. The bloW-baclr-valve shown in Figure l is provided with peripheral passages 32 located between radial arms 33. The body or' the valve 30 is ot' a size to cover the seat 31 when its valve is in its normal closed position under the action of a helical compression spring Se; "Nhcn the-parts are so positioned as shown in Figures 2 and 3, tliebloW-bacli va ve may be forced inwardly bythe spoutl of an oil can inserted into the passage 30', whereupon oilL directed against the blow-baci: valve will floiv through ftherpassag-es 325 the duct-s 29 and linally into'the container 13. A plurality ot ppositely disposed cylindrical tubes'35 are screwed into the container 13.- rihe outer ends ot these tubes'are closed and the tubes by their presenceincrease-the capacity of the container. l

In the drawings I have shown av manuallyoperable means for mechanically operating the valve 22; thefsaidmeans comprising a cylindricalv housing SGhaving' at one endl a head' 37 which is provided-With a-central opening for the reception of thelmale iitting '11, the head also bearing on one end ot the casing 9 andthe fitting supporting one end ofthe housing. An annular head 38 is screwed into the opposite end ot the housing and surrounds the female fitting 10. An annular space 89 is provided betiveen the housing 36 and casing S), and a cam 4t() secured to the housing is disposed within the space 39, and an inletk opening tl extends through the said Wall of the housing and through the Wider end portion ot the cam.l rThe housing is operableupon the fittings l0 and ll for thefpurpose oi moving the.l opening il into'- and out of aline- -ment Awith the passage 27. -lfhen the 'opening -il and passage 27 are in alinement, the thickened end of the cam bears upon the inlet valve 2Q, and the said valve is forced inwardly against the action ot spring 25, so that needle pointvscloses the passage between theV container and the chamber 15. This is the position-ot the parts when replenishing the supply of lubricant Within the container i3.

When the'housing is Vturned in a contraclockivise direction from the position'shown in Figure` 3, the solid part ot the housing moves over the passage 27 and, at the same tle, inlet valve Q2 moves outwardly under the action of its spring and due to the slope et the inner tace ot the cam 40.

With this construction' it is obvious that the operation o't'replenishing the supply of lubricant Within the container maybe carried out Without cutting oil1 the supply of fluid to the iiuid operated device. It so desiredstops42 andy 43"may-beprovided, as shown in Figureon the opposite faces of the housing and casing to limit the movement-ot the housing in one direction when the opening 41 thereofv registers with the p assage. 27.

Although I have shown and described onev enibodiine'n'tot my invention, it is to be understood that the-same is susceptible ot' various changes; and I reserve the right to employ suclr as may come Within the scope of the appended claims.

- I claim: l. A lubricator comprising a casing, a

fluid connection leading into the casing, a

containerl having a chamber communicating therewith for vdelivering oil in position to bc entrained by fluid supplied by the connection and -an inlet passage through which lubricantis supplied to the container, a 'valve t' member disposed vwithin the container having-opposite end portions adapted for controlling communication between the container and' chamber and passage-throughlthe inlet 'opening-5 saidA valve* member `being bodilyzinovablein onedirection to cut oli'fcomp `iuuni'cationbetween the container and chamber andto open-the inlet passage. i

2. A lubricator comprisinga casing, a fluid connectionleadinginto* theV casing,- a container having a chamber communicating therewith for delivering oil in position to be entrained by fluid' supplied by the connection and an inlet'passage through which lubricant is .supplied to the container,` a valve member disposed within the container havingcoppositeendl portions adapted for controlling communication between :the container and4 chamber and passage through the inlet opening, said valve member being-bodily movable-mene direction to cut oft communication between the container' and chamber and, to openthe inlet passage,: and also i@ movable bodily in an opposite direction to effect communication betweenI the chamber and container and to close the inlet passage.

3. Alubricator comprising aicasing,afluid connection leading into the casing, a container Within the casing having a compartment for' delivering lubricant in position' to be entrainedfby@tluidsupplied "by the: connection,Y said container havingl oppositely disposed openings, oneloil which provides an inlet passage and the other an outlet leading to the chamber, a movable valve member disposed within'the container having one end portion normally closing the inlet passage and its oppositev end portion 'disposed in spaced relation to the outlet opening7 and manually operable means'ior movingf the vvalve memberH to simultaneously 'open the inlet passage and closel the outlet passage.l

Ll. 'A lubricator comprising a casing, a iluidconn'ection leading into the casing, a container Within the-casing having a comlpart1nent'="tor delivering lubricant in position tobe"e ntrai1'1ed` byv iiuidsuppli'ed by lll) spring operating to hold said valve member so that one end thereof normally closes the inlet passage and the opposite end' uncovers the outlet passage, and manuallyroperable means for moving said valvev member against the action of said spring to simultaneously open the inlet passage and close the outlet passage.

5. A lubricator comprising a casing, a fluid connection leading into the casing, a container Within the casing having acompartment for delivering' lubricant in position to be entrained by fluid supplied by the connection, said container having oppositely disposed openings7 one of which provides aninlet passage and the other an outlet leading to tlie chamber, a movable valve member disposed Within the container llaving one end portion normally closing the in-y let passage and provided with a valve controlled inlet duct leading into the inlet passage, the opposite end portion of said valve 'member kbeing disposed in spaced relation to the outlet opening, anda manually operable means adapted to be moved 1n opposite directions to expose and close said duct, and

further adapted to move the vvalve meinberto simultaneously open the inlet passage and close the outlet passage.

' JOHN lV. ARNOLD.

so i 

